This guide will walk you through how to configure suits so that clicking 1 will add 2 pieces to the order for a 2 piece suit, or 3 pieces to the order for a 3 piece suit.
In Portal.sudzy.co -> Pricing -> Items, you'll set the price and quantity for your suits.
Now when you add one 2 Piece Suit to an order, it will show 2 pcs instead of one. If you add two 2 piece suits, it will show 4 pcs, etc.